I have a catless exhaust and my sti ( 05 sti) has it's check engine light on, I read that if you bought a MIL Eliminator and hooked it up you can fix it and erase all the false codes the ECU is putting out. I did that and for yesterday it was ok, but today after driving it for 30 miles, my check engine light came back on, I checked the ECU and its putting a BANK ! LEAN code. how can I fix this problem?????